When the center of stiffness and the center of mass of the structure differ under the seismic load, torsion is caused by eccentricity. In this study, an analysis model was modeled in which the positions of the core and the plane rotation axis of a 60-story torsional atypical structure with a plane rotation angle of 1 degree per floor were different. The structural behavior of the analysis model was analyzed, and the earthquake response behavior of the structure was analyzed based on the time history analysis results. As a result, as the eccentricity of the structure increased, the eccentricity response was amplified in the high-rise part, and the bending and torsional behavior responses were complex in the low-order vibration mode. As a result of the analysis, the maximum displacement and story drift ratio increased due to the torsional behavior. The maximum story shear force and the story absolute maximum acceleration showed similarities for each analysis model according to the shape of the vibration mode of the analysis model.

Abstract
1. 서론
2. 해석모델
    2.1 해석모델 개요
    2.2 해석방법
    2.3 해석모델의 편심율
    2.4 해석모델의 동적특성
3. 해석결과
    3.1 최대변위 및 층간변형률
    3.2 층 절대가속도 및 층 전단력 분석
4. 결론
References

• 이다혜(영남대학교 일반대학원 건축학과, 박사과정) | Lee Da-Hye (Dep. of Architecture, Yeungnam University)
• 김현수(선문대학교 건축학부 교수) | Kim Hyun-Su (Division of Architecture, Sunmoon University)
• 강주원(영남대학교 건축학부 교수) | Kang Joo-Won (School of Architecture, Yeungnam University) Corresponding author